the choice of an instrument is merely a tool for self-expression. as long as a job can be done with quality, the method just doesn't really matter.
with that said, retro hardware becomes more difficult to acquire and maintain as the years pass (e.g. the declining availability of sid chips and computers built before the year 2000). if enough people remain interested in the games, applications, and hardware of yesteryear, then chipmusic will remain a viable method of expression. nothing can survive in a vacuum.
imo generations x, y, and z will be the most enthusiastic and receptive about retro hardware and chipmusic in general. i definitely buy into the idea that 'you had to be there when x system was still current' in order to fully understand the cultural and technological advancements that were surrounding the computing/gaming eco system. regardless, the boundaries of productions made with retro hardware are still being pushed, and there will always be room for further refinement on all platforms.